Fix slow API calls and failing to connect to API

See merge request !10

- move to 2048 bit keys
- include webserver root cert in repo
- contact api every 60 seconds by default
- retry failed http connections if the connection broke

for config, remove debug task in main

Resolve "Use post request for door access"

Closes #9

See merge request !9

anymore

Continuous Deployment

See merge request !8

Resolve "Verify image on update"

Closes #5

See merge request !7

Resolve "Fix bugs in the status module"

Closes #8

See merge request !6